//const EventEmitter = require('events');
//const {EventEmitter} = require('events');

const EventEmitter = require('events').EventEmitter;

class Dog extends EventEmitter{
  constructor(name,energy){
    super();
    this.#name = name;
    this.#energy = energy;
    this.#startTimer();
  }
  get name(){
    return this.#name;
  }
  get energy(){
    return this.#energy;
  }
  set energy(e){
    this.#energy=e;
    this.#startTimer();
  }

  #name = '';
  #energy = 0;
  #timer = null;
  #startTimer(){
    if(this.#timer!==null) return;
    this.#timer=setInterval(()=>{
      if(this.#energy>0){
        this.#energy--;
        this.emit('bark');
      }else{
        clearInterval(this.#timer);
        this.#timer=null;
      }
    },1000)
  }
}
module.exports=Dog;
